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s390-tools
dasd_reload.suse
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File dasd_reload.suse of Package s390-tools
#!/bin/sh # # dasd_reload # $Id: dasd_reload,v 1.2 2004/05/26 15:17:09 hare Exp $ # # Deconfigures all active DASDs, unloads the modules # and activates the configured DASDs again. # Needed to establish an identical device mapping # in the installation system and in the running system. # All DASD access need to be cancelled prior to running # this script. # # Usage: # dasd_reload # # Return values: # 1 Cannot read /proc/modules # 2 Missing module programs # 3 /sys not mounted # 4 Failure on deactivate DASDs # if [ ! -r /proc/modules ]; then echo "Cannot read /proc/modules" exit 1 fi if [ ! -x /sbin/rmmod -o ! -x /sbin/modprobe ]; then echo "Missing module programs" exit 2 fi if [ ! -d /sys/bus ]; then echo "sysfs not mounted" exit 3 fi let anymd=0 if [ -f /proc/mdstat ]; then for mddevice in $(grep active /proc/mdstat | cut -f1 -d:); do mdadm -S /dev/${mddevice} let anymd=1 done udevadm settle fi # # Setting HyperPAV alias devices offline # dasd_alias= let EXITRC=0 for dev in /sys/bus/ccw/devices/*; do if [ -f ${dev}/use_diag ]; then read _online < ${dev}/online read _alias < ${dev}/alias if [ "$_online" -eq 1 -a "$_alias" -eq 1 ]; then echo "setting DASD HyperPAV alias $(basename ${dev}) offline" echo "0" > ${dev}/online read _online < ${dev}/online dasd_alias="${dasd_alias} $(basename ${dev})" if [ "$_online" -eq 1 ]; then echo "failure on setting DASD HyperPAV alias $(basename ${dev}) offline !" let EXITRC=4 fi fi fi done # # Setting "normal" DASD and HyperPAV base devices offline # dasd_base= for dev in /sys/bus/ccw/devices/*; do if [ -f ${dev}/use_diag ]; then read _online < ${dev}/online read _alias < ${dev}/alias if [ "$_online" -eq 1 -a "$_alias" -eq 0 ]; then echo "setting DASD $(basename ${dev}) offline" echo "0" > ${dev}/online read _online < ${dev}/online dasd_base="${dasd_base} $(basename ${dev})" if [ "$_online" -eq 1 ]; then echo "failure on setting DASD $(basename ${dev}) offline !" let EXITRC=4 fi fi fi done udevadm settle module_list= module_test_list="dasd_diag_mod dasd_eckd_mod dasd_fba_mod dasd_mod" for module in ${module_test_list}; do if grep -q "${module}" /proc/modules; then module_list="${module} ${module_list}" : Unloading ${module} /sbin/rmmod ${module} fi done udevadm settle sleep 2 if [ -d /etc/udev/rules.d ]; then cd /etc/udev/rules.d # # Re-activating "normal" DASD and HyperPAV base devices # # We need to move all the DASD udev rules out from /etc/udev/rules.d # because if we don't, then when the first DASD volume gets brought # back online, they are all brought back online, in a non-deterministic # order, not the numeric order we expect. # mv -i 41-dasd-*.rules 51-dasd-*.rules /tmp cd /tmp for dasd in ${dasd_base}; do for file in 41-dasd-*-${dasd}.rules 51-dasd-${dasd}.rules; do [ -f "${file}" ] || continue # # Special handling is needed for old udev rules that start with 51- # since the chzdev command won't look for that name # prefix="$(echo ${file} | cut -f1 -d-)" if [ "${prefix}" == "51" ]; then if [ -h /sys/bus/ccw/drivers/dasd-eckd/${dasd} ]; then mv -i ${file} 41-dasd-eckd-${dasd}.rules elif [ -h /sys/bus/ccw/drivers/dasd-fba/${dasd} ]; then mv -i ${file} 41-dasd-fba-${dasd}.rules else echo "DASD volume ${dasd} is neither an ECKD or FBA device." let EXITRC=4 fi fi echo Activating ${dasd} mv -i "${file}" /etc/udev/rules.d/ /sbin/chzdev dasd --apply --configured -q --no-root-update ${dasd} lsdasd break done done # # Re-activating HyperPAV alias devices # for dasd in ${dasd_alias}; do for file in 41-dasd-*-${dasd}.rules 51-dasd-${dasd}.rules; do [ -f "${file}" ] || continue echo Activating ${dasd} mv -i "${file}" /etc/udev/rules.d/ /sbin/chzdev dasd --apply --configured -q --no-root-update ${dasd} break done done fi exit ${EXITRC}
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